Doogie Howser will no longer appear at next Saturday's Celebrity Autobiography event "due to a previously unforseen engagement out of the country that cannot be rescheduled," organizers said in a statement.

But don't let your faces droop too much, fans of comedy. The festival has landed on its feet by scheduling Harris' "How I Met Your Mother" co-star Jason Segal as his replacement. You may remember seeing a lot of Segal in "Forgetting Sarah Marshall" or being choked by Lou Ferrigno in "I Love You Man."